Can smoking marijuana cause lung cancer?

My friend started smoking weed, and he says its fine because "its not like it causes lung cancer like cigarettes..."

I wanted to see if this was true. Please, only answers from people who actually know the truth, no answers from people who smake it and are oblivious...

... d.amn pot-heads.

There is NO link between marijuana and any cancer. In fact, new studies show there may be a slight protective effect.

Myth #15
Marijuana is more damaging to the lungs that tobacco. Marijuana smokers are at high risk of developing lung cancer, bronchitis, and emphysema.

Fact:
Moderate smoking of marijuana appears to pose minimal danger to the lungs. Like tobacco smoke, marijuana smoke contains a number of irritants and carcinogens. But marijuana users typically smoke much less often than tobacco smokers and, over time, inhale much less smoke. As a result, the risk of serious lung damage should be lower in marijuana smokers. There have been no reports of lung cancer related solely to marijuana. However, because researchers have found precancerous changes in cells taken from the lungs of heavy marijuana smokers, the possibility of lung cancer from marijuana cannot be ruled out. Unlike heavy tobacco smoker, heavy marijuana smokers exhibit no obstruction of the lungs small airways. This indicates that people will not develop emphysema from smoking marijuana.

http://www.medboardwatch.com/wb/pages/ma...

Actually they are not the same at all (Cigs and Cannabis)

Look at tobacco, sure smoking it can get you cancer, so I see why you THINK its the same for smoking cannabis.

BUT

People who just CHEW tobacco get cancer anyhow.
Chewing broccoli doesn't give me cancer so you can't say just because there are 2 plants you use the same way they OBV give cancer.

Harry J. Anslinger was the man in charge of the original cannabis-prohabition movement in the 1930.
After a 2 year study conducted by the mayor of New york city, they found people who smoked cannabis, even a lot of cannabis, had a REDUCED occurence of cancer.

Anslinger promptly shut down that research group and that was the end of medical testing on cannabis utill the 1970's.

The government in the 1970's and again in the 1990's conducted secret experiments with cannabis and cancer tumors in mice.
Both times they found it reduced cancer tumors, it could prevent cancer from forming and the mice taking it had a 40% longer life expectancy than those that did not.

So that means 35 years ago the government had promising anti-cancer research going but didn't fallow up with it just because it was pot. (think of how far we could have got in that time)

luckily for the rest of the world, that information in 1997 got leaked to a British journal of health and science and ever sense then over seas and some states here (like California) have been vigorously researching and have had great success.

what the pot lovers are saying is that back in the 70's a few tests that aren't as effective as the ones done today showed pot can in fact inhibit cancer growth, and most of the studies but that one william was talkin about, didn't involve smoking it. nowadays we are seeing that these dumbass studies in the 70's were wrong, and people ARE ******* getting lung diseases and cancerous sells from smoking weed, maybe it isn't the WEED that does it, but the smoke sure does and always will, so ya, it ******* can, it ****** did, and I know plenty of dumb ***** that just got it so quit ****** smoking this **** unless you really need it, get medical marijuana dumbshit, it's illegal

Marijuana contains more carcinogenic hydrocarbons than tobacco smoke and because marijuana smokers usually inhale deeper and hold the smoke in their lungs longer than tobacco smokers, their lungs are exposed to those carcinogenic properties longer.
One study found that marijuana smokers were three times more likely to develop cancer of the head or neck than non-smokers. Many researchers believe than smoking marijuana is overall more harmful to the lungs than smoking tobacco.

Any type of drug that can be inhaled or smoke is VERY likely to cause lung cancer IF used REGULARLY or just enough to burn your lungs out.

So, tell your friend that he's a liar for saying that because a joint of marijuana is 4 times as worse to your lungs then a cigarette. Might not be addictive, but still horrible. I guess if it's not a complete habit then he's not in TOO much risk. But like i said, too much will affect your lungs in a bad manner.

try reading these:
http://cannazine.co.uk/cannabis-news/uni...
http://www.legalize.com/nocancer.htm
http://cancer.about.com/od/smokingandcan...
http://www.drugscience.org/Archive/bcr1/...
what do you think???

Yes, It can I am an oncology nurse and I am currently seeing multiple people who are in their 50's (think 1960's flower children) who never smoked tobacco but have been life long pot heads who have small cell carcinoma of the lung. Please don't allow your friend to wind up like them in 30 years. Get him some help.

Researchers have not proved it does or does not cause lung cancer.
although inhaling any kind of smoke is bad. marijuana does have tar when burned aswell. I used to grow and sell pot, no more though I just grew out of it. I honestly had more fun growing it then smoking it...

Smoking anything will most probably give you lung cancer, weather it's just a small joint or sucking on a car exhaust... you'll get cancer.

Fairybread is quite correct, far more tar in the cannabis and not recommended.

YYYYYYYEEEEEEESSSSSSSSS

its just the same as cigs...only not as addictive.....if you keep choosing to smoke it, it will have the same effect as cigs....srry...hope that helped